Lupica Formation (
Spanish: Formación Lupica) is a
volcano-sedimentarygeological formation in the Andes of
Arica y Parinacota Region in northernmost Chile. There have been differing views on the relative age and
stratigraphy of Lupica Formation, to some authors, it is an eastern equivalent of the
MioceneOxaya Formation,[1] yet others consider it is an older formation that underlies part of the Oxaya Formation.[2] According to Wotzlaw and co-workers the lower part of the formation originated from a nearby
volcanic arc that existed in the
Eocene.[3]
Azapa Formation contain clasts that possibly derive from Lupica Formation.[2]
References
^Charrier, Reynaldo; Chávez, Álvaro N.; Elgueta, Sara; Hérail, Gérard; Flynn, John J.; Croft, Darin A.; Wyss, André R.; Riquelme, Rodrigo; García, Marcelo (2005). "Rapid tectonic and paleogeographic evolution associated with the development of the Chucal anticline and the Chucal-Lauca Basin in the Altiplano of Arica, northern Chile". Journal of South American Earth Sciences. 19 (1): 35–54.
doi:
10.1016/j.jsames.2004.06.008.